Today I saw something new.
I was passed by a car, and a passenger was hanging out of the window, yelling "You can't ride your bike here, idiot!" in a cracked teenage voice, when the door he was hanging out of opened.

Ooops.

Quick reflexes allowed him to hang on to the door, despite the fact that the driver stepped on the brakes, making the door open even wider. When the driver realized that braking didn't help, he let go of the brakes, and finally succeded in wrestling his buddy back inside again, simultaniously avoiding a frontal collision with an oncoming car.
The whole thing lasted ten seconds at the most, and the guy clinging to the door never touched the road.

I'm quite happy that I'm not a teenager any more :-)